The most important application of fluid flow techniques in the mineral processing industry is the transportation of slurries. Whenever solid materials are in particulate form transportation in the form of a slurry is possible.

Magnesium hydroxide slurry consists of an aqueous suspension of particulate magnesium hydroxide. The principle sources of slurry are from seawater- or brine-produced magnesium hydroxide, natural brucite, or from the slaking of magnesium oxide powder. Magnesium hydroxide slurry is gaining in popularity as a replacement for caustic soda and lime in waste-water treatment applications.